#include<bits/stdc++.h> using namespace std; int main() { int n,m; cin>>n>>m; int cnt=0; for(int i=n;i<=m;i++) { int g=i%10; int s=i/10%10; int b=i/100; if(g+s+b==8) { cnt++; } } cout<<cnt; return 0; }
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